Subscribe to Feed

iCalendar

Choose your calendar program and follow the instructions to properly subscribe to the iCalendar feed.
This ensures that you will receive the latest changes to the calendar.
Please note that how often your application syncs to the latest feed is dependent upon the application settings.

Click "Yes" when prompted to verify that you want to subscribe to the calendar.

Outlook 2007

In Outlook, on the "Tools" menu, click "Account Settings".

On the "Internet Calendars" tab, click "New".

Enter the iCal feed URL, then click "Add".

In the "Folder Name" box, type the name of the calendar as you want it to appear in Outlook, and then click "OK".

Mac OS iCal

In Calendar, choose "File > New Calendar Subscription".

Enter the iCal feed URL, and then click "Subscribe".

Enter a name for the calendar in the "Name" field and choose a color from the adjacent pop-up menu.

To update your copy of the calendar when changes to it are published, choose the update frequency from the "Auto-refresh" pop-up menu.

Click "OK".

To make changes to the calendar, click the name of the calendar, and then choose "Edit > Get Info".

Yahoo! Calendar

In Yahoo Mail, click the "Calendar" icon.

In the "Calendars" column, click the "Manage Followed Calendars" icon next to "Following".

Select "Follow Other Calendars".

Enter a name for the calendar.

Enter the iCal feed URL.

Select a color for the calendar.

Select "Refresh" and "Remind" options.

Click "Save".

iOS (iPad, iPhone, etc.)

Open the "Settings" app on your iOS device.

Tap on "Mail, Contacts, Calendars".

Tap on "Add Account" under the "Mail" section.

Tap on "Other".

Tap on Add Subscribed Calendar" under the "Calendars" section.

Enter the iCal feed URL and tap "Next".
Your device will then attempt to verify the feed.

Change any additional details (such as the description) and then tap "Save".

RSS

RSS feeds require a dedicated "reader" to subscribe and read them.
There are many applications and apps out there and this will be device- or browser-specific.
Here are some several links to both web-based and browser-based (add-ons) feed readers.

Web-Based Readers

InoReader is popular RSS reader.
It is clean, simple and powerful, and displays articles is several formats.
Like many modern web-apps, InoReader offers a full suite of social "sharing" options.
It also integrates with many other web-apps, e.g., Pocket, Evernote, and Readability.
InoReader provides Android and iOS apps, plus a mobile site for other small format devices.
There are also InoReader extensions for major browsers.

Feedly is similar to InoReader.
It also displays the latest updates sites like Facebook and Twitter.
Feedly integrates with many other apps and services as well.

G2Reader is also similar to InoReader.
According to their web site, the free version of G2Reader can accommodate up to 100 feeds.

Blogtrotter is a unique service that accesses web feeds you subscribe to and relays them to your email inbox.
It converts the content to a compact, easy-to-read format.
Blogtrotter accepts OPML subscription lists so you could use it to replace Google Reader if you only have several feeds you want to follow.

Netvibes offers a wide range of "widgets" and apps to access web feeds, tweets and other kinds of dynamic content.
For example, there's an app that delivers all the latest news from Google, split up into 8 tabs for World, U.S., Business, Sci/Tech, Sports, Entertainment, Health and Most Popular.

Feedbooster has an impressive array of filters -- date, folder, author, source, etc.
It's a different way to access articles.
Some users will find it works well for them.

AOL has a simple but complete web reader.
In particular, it makes it easy to open items you're interested in a new tab.
After you've got the ones you want load, you can shift to reading them, extracting what you want, etc.

Browser Add-Ons/Extensions

Add-ons/Extensions for browsers and web-apps for smartphones and tablets combine many of the advantages of desktop readers and web-based readers like Google Reader.
They have a small footprint and can be "instantly" installed/uninstalled as well.
Like web-based readers, an add-on reader creates an efficient browser-centric workspace, with good workflow for feed-based tasks.

Mozilla has many popular feed-reader add-ons for Firefox.
You can add them to Firefox from the extensions pages.
Brief is a Firefox extension and is powerful and simple at the same time.
Brief is an excellent, capable replacement for Google Reader.
NewsFox is another capable add-on that puts a three pane reader (classic email layout) directly in a tab.
Both of these Firefox extensions integrate directly with Live Bookmarks.
There are also many other feed reader extensions for Firefox.

NewsBlur is an RSS reader that you can "train" (like/dislike) to show you just the kind of posts you want to see from each feed.
The free version of NewsBlur is limited to 64 feeds, but that is enough for many users.
Free iPad/iPhone apps, Android apps, Windows Phone 8 apps, browser add-ons, and more are offered.